Release of phosphorus under reducing and simulated open drainage conditions from overfertilised soils

Scalenghe, Riccardo; Edwards, Anthony C.; Barberis, Elisabetta; Ajmone-Marsan, Franco

doi:10.1016/j.chemosphere.2013.09.016

Cited by 27 publications

(17 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As with pore water, linear relationships between floodwater DRP concentration and pore water Ca concentration in Lakeland B and Sprague soils had slopes of near zero or slightly negative, indicating that floodwater DRP concentration remained stable or slightly decreased with increasing pore water Ca concentration. Since these two soils showed high initial concentrations of Ca in pore water, precipitation of dissolved P with Ca 2+ may have occurred, forming Ca‐phosphate minerals (Scalenghe et al, 2014; Zhang et al, 2010) and resulting in a decrease in pore water DRP concentration in these two soils and in few other soils during the last half of the flooding period.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

et al. 2015

View full text Add to dashboard Cite

Anaerobic soil conditions resulting from flooding often enhance release of phosphorus (P) to overlying water. Enhanced P release is well documented for flooded acidic soils; however, there is little information for flooded alkaline soils. We examined the effect of flooding and anaerobic conditions on P mobilization using 12 alkaline soils from Manitoba that were either unamended or amended with solid cattle manure. Pore water and floodwater were analyzed over 8 wk of simulated flooding for dissolved reactive P (DRP), Ca, Mg, Fe, and Mn. As expected, manured soils had significantly greater pore and floodwater DRP concentrations than unamended. Flooding increased pore water DRP concentrations significantly in all soils and treatments except one manured clay in which concentrations increased initially and then decreased. Floodwater DRP concentrations increased significantly by two-to 15-fold in 10 soils regardless of amendment treatment but remained relatively stable in the two soils with greatest clay content. Phosphorus release at the onset of flooding was associated with the release of Ca, Mg, and Mn, suggesting that P release may be controlled by the dissolution of Mg and Ca phosphates and reductive dissolution of Mn phosphates. Thereafter, P release was associated with release of Fe, suggesting the reductive dissolution of Fe phosphates. Differences in pore water and floodwater DRP concentrations among soils and amendment treatments and the high variability in P mobilization from pore water to floodwater among soils indicate the need to further investigate chemical reactions responsible for P release and mobility under anaerobic conditions.

show abstract

Section: Resultsmentioning

confidence: 99%

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Phosphate (PO 4 ) adsorption to the surface of Fe and Al (hydr)oxides is high, and it may also be adsorbed to hydroxy‐Al polymers in clay minerals (Karathanasis et al ., ) and to carbonate minerals. Environmental factors such as pH and the redox status of the soil influence exchanges between solid and soluble phases (Gustafsson et al ., ; Scalenghe et al ., ). Phosphate adsorption increases with decreasing pH (Goldberg & Sposito, ) whilst precipitation of phosphate with Ca is expected at higher pH where a number of Ca‐P minerals may form.…”

Section: Introductionmentioning

confidence: 97%

Explaining and mapping total phosphorus content in French topsoils

Delmas¹,

Saby²,

Arrouays³

et al. 2015

Soil Use and Management

View full text Add to dashboard Cite

Total phosphorus (TP) build-up in agricultural soils represents both a threat to aquatic ecosystems and a valuable resource for future crop production, given the context of increasing food demand combined with the rapid depletion of the world's phosphate reserves. Therefore, it is crucially important (i) to identify the main factors controlling topsoil TP and (ii) to develop methods for mapping its spatial distribution. Multiple linear regression models were used with two distinct approaches to calculate TP and covariates linked to the P cycle. Firstly, covariates were selected from the R eseau de Mesures de la Qualit e des Sols database, the French soil monitoring network, which consists of soil samples collected from 2158 sites on a 16-km regular grid. Secondly, covariates were selected to map TP from spatially exhaustive datasets in France. The first approach explains 80% of variability in topsoil TP. The variables selected are linked to the autochthonous origin of P (parent material), to allochthonous origin (organic carbon and nitrogen contents) and to the retention capacity of soil (Al, Fe, Ca and clay contents). The predicted map obtained from the second approach provides a mean TP of 0.76 g/kg. This study demonstrates that creating national scale maps of TP, based on detailed soil sampling and many variables, is feasible and can be used to model the P cycle and P transfer processes. Such maps can be used in P erosion and transfer models over river basins, and therefore to predict P exports to surface waters.

show abstract

“…In particular, the important role of colloids to serve as carrier of P in soils and waters has been highlighted (e.g., Henderson et al, 2012;Gottselig et al, 2014;Liu et al, 2014;Baken et al, 2016;Jiang et al, 2017;Gu et al, 2018;Missong et al, 2018). Also wellconstrained is the capacity of P to bind with manganese (Mn) and iron oxides and the influence the redox state of soils and waters has on P mobility in the environment (Scalenghe et al, 2012;Van der Grift et al, 2014;Jiang et al, 2015a,b;Smolders et al, 2017). Along with these understandings, novel high resolution P water quality monitoring, such as sensor technology, can be used to understand the processes of dissolved and particle-bound substances in waters.…”

Section: Introductionmentioning

confidence: 99%

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

et al. 2018

View full text Add to dashboard Cite

show abstract

Release of phosphorus under reducing and simulated open drainage conditions from overfertilised soils

Cited by 27 publications

References 50 publications

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Explaining and mapping total phosphorus content in French topsoils

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

Contact Info

Product

Resources

About